Qt5 built in qwt (#570)

- qt4->qt5
- in built qt5 6.1.5 because rhel7 is not upto date with qt5, removed findqwt.cmake
- made a fix in qwt lib (qwt_plot_layout.h) to work with 5.15 and lower versions for qrect constr.
- qt5 forms fixed, qt4 many hard coding forms switched to forms including qtabwidget, scrolls etc, fonts moved to forms
 - docking option enabled by default, removed option to disable docking feature from "Mode"
- added qVersionResolve utility functions to handle compatibility before and after qt5.12
- qtplots (ian's code) takes in gain mode enable to set some settings within the class, with proper gain plot ticks
- ensure gain plots have no zooming of z axis in 2d and y axis in 1d
- removed placeholder text in qpalette in main window form as its not supportd until 5.12 (so using qt5.9 designer insted of qt5.15 to cope)
- tab order
Servers:
- fixed some error messages that were empty for fail in funcs (mostly minor as if this error, major issues)

libs/qwt-6.1.5/doc/man/man3/QwtPoint3D.3

@@ -0,0 +1,184 @@
+.TH "QwtPoint3D" 3 "Mon Jun 1 2020" "Version 6.1.5" "Qwt User's Guide" \" -*- nroff -*-
+.ad l
+.nh
+.SH NAME
+QwtPoint3D \- \fBQwtPoint3D\fP class defines a 3D point in double coordinates\&.  
+
+.SH SYNOPSIS
+.br
+.PP
+.PP
+\fC#include <qwt_point_3d\&.h>\fP
+.SS "Public Member Functions"
+
+.in +1c
+.ti -1c
+.RI "\fBQwtPoint3D\fP ()"
+.br
+.ti -1c
+.RI "\fBQwtPoint3D\fP (double \fBx\fP, double \fBy\fP, double \fBz\fP)"
+.br
+.RI "Constructs a point with coordinates specified by x, y and z\&. "
+.ti -1c
+.RI "\fBQwtPoint3D\fP (const \fBQwtPoint3D\fP &)"
+.br
+.ti -1c
+.RI "\fBQwtPoint3D\fP (const QPointF &)"
+.br
+.ti -1c
+.RI "bool \fBisNull\fP () const"
+.br
+.ti -1c
+.RI "double \fBx\fP () const"
+.br
+.ti -1c
+.RI "double \fBy\fP () const"
+.br
+.ti -1c
+.RI "double \fBz\fP () const"
+.br
+.ti -1c
+.RI "double & \fBrx\fP ()"
+.br
+.ti -1c
+.RI "double & \fBry\fP ()"
+.br
+.ti -1c
+.RI "double & \fBrz\fP ()"
+.br
+.ti -1c
+.RI "void \fBsetX\fP (double \fBx\fP)"
+.br
+.RI "Sets the x-coordinate of the point to the value specified by x\&. "
+.ti -1c
+.RI "void \fBsetY\fP (double \fBy\fP)"
+.br
+.RI "Sets the y-coordinate of the point to the value specified by y\&. "
+.ti -1c
+.RI "void \fBsetZ\fP (double \fBy\fP)"
+.br
+.RI "Sets the z-coordinate of the point to the value specified by z\&. "
+.ti -1c
+.RI "QPointF \fBtoPoint\fP () const"
+.br
+.ti -1c
+.RI "bool \fBoperator==\fP (const \fBQwtPoint3D\fP &) const"
+.br
+.ti -1c
+.RI "bool \fBoperator!=\fP (const \fBQwtPoint3D\fP &) const"
+.br
+.in -1c
+.SH "Detailed Description"
+.PP 
+\fBQwtPoint3D\fP class defines a 3D point in double coordinates\&. 
+.SH "Constructor & Destructor Documentation"
+.PP 
+.SS "QwtPoint3D::QwtPoint3D ()\fC [inline]\fP"
+Constructs a null point\&. 
+.PP
+\fBSee also\fP
+.RS 4
+\fBisNull()\fP 
+.RE
+.PP
+
+.SS "QwtPoint3D::QwtPoint3D (const \fBQwtPoint3D\fP & other)\fC [inline]\fP"
+Copy constructor\&. Constructs a point using the values of the point specified\&. 
+.SS "QwtPoint3D::QwtPoint3D (const QPointF & other)\fC [inline]\fP"
+Constructs a point with x and y coordinates from a 2D point, and a z coordinate of 0\&. 
+.SH "Member Function Documentation"
+.PP 
+.SS "bool QwtPoint3D::isNull () const\fC [inline]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+True if the point is null; otherwise returns false\&.
+.RE
+.PP
+A point is considered to be null if x, y and z-coordinates are equal to zero\&. 
+.SS "bool QwtPoint3D::operator!= (const \fBQwtPoint3D\fP & other) const\fC [inline]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+True if this rect and other are different; otherwise returns false\&. 
+.RE
+.PP
+
+.SS "bool QwtPoint3D::operator== (const \fBQwtPoint3D\fP & other) const\fC [inline]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+True, if this point and other are equal; otherwise returns false\&. 
+.RE
+.PP
+
+.SS "double & QwtPoint3D::rx ()\fC [inline]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+A reference to the x-coordinate of the point\&. 
+.RE
+.PP
+
+.SS "double & QwtPoint3D::ry ()\fC [inline]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+A reference to the y-coordinate of the point\&. 
+.RE
+.PP
+
+.SS "double & QwtPoint3D::rz ()\fC [inline]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+A reference to the z-coordinate of the point\&. 
+.RE
+.PP
+
+.SS "QPointF QwtPoint3D::toPoint () const\fC [inline]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+2D point, where the z coordinate is dropped\&. 
+.RE
+.PP
+
+.SS "double QwtPoint3D::x () const\fC [inline]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+The x-coordinate of the point\&. 
+.RE
+.PP
+
+.SS "double QwtPoint3D::y () const\fC [inline]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+The y-coordinate of the point\&. 
+.RE
+.PP
+
+.SS "double QwtPoint3D::z () const\fC [inline]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+The z-coordinate of the point\&. 
+.RE
+.PP
+
+
+.SH "Author"
+.PP 
+Generated automatically by Doxygen for Qwt User's Guide from the source code\&.