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/QwtArraySeriesData.3

@@ -0,0 +1,120 @@
+.TH "QwtArraySeriesData< T >" 3 "Mon Jun 1 2020" "Version 6.1.5" "Qwt User's Guide" \" -*- nroff -*-
+.ad l
+.nh
+.SH NAME
+QwtArraySeriesData< T > \- Template class for data, that is organized as QVector\&.  
+
+.SH SYNOPSIS
+.br
+.PP
+.PP
+\fC#include <qwt_series_data\&.h>\fP
+.PP
+Inherits \fBQwtSeriesData< T >\fP\&.
+.SS "Public Member Functions"
+
+.in +1c
+.ti -1c
+.RI "\fBQwtArraySeriesData\fP ()"
+.br
+.RI "Constructor\&. "
+.ti -1c
+.RI "\fBQwtArraySeriesData\fP (const QVector< T > &\fBsamples\fP)"
+.br
+.ti -1c
+.RI "void \fBsetSamples\fP (const QVector< T > &\fBsamples\fP)"
+.br
+.ti -1c
+.RI "const QVector< T > \fBsamples\fP () const"
+.br
+.ti -1c
+.RI "virtual size_t \fBsize\fP () const"
+.br
+.ti -1c
+.RI "virtual T \fBsample\fP (size_t index) const"
+.br
+.in -1c
+.SS "Protected Attributes"
+
+.in +1c
+.ti -1c
+.RI "QVector< T > \fBd_samples\fP"
+.br
+.RI "Vector of samples\&. "
+.in -1c
+.SH "Detailed Description"
+.PP 
+
+.SS "template<typename T>
+.br
+class QwtArraySeriesData< T >"
+Template class for data, that is organized as QVector\&. 
+
+QVector uses implicit data sharing and can be passed around as argument efficiently\&. 
+.SH "Constructor & Destructor Documentation"
+.PP 
+.SS "template<typename T> \fBQwtArraySeriesData\fP< T >::\fBQwtArraySeriesData\fP (const QVector< T > & samples)"
+Constructor 
+.PP
+\fBParameters\fP
+.RS 4
+\fIsamples\fP Array of samples 
+.RE
+.PP
+
+.SH "Member Function Documentation"
+.PP 
+.SS "template<typename T > T \fBQwtArraySeriesData\fP< T >::sample (size_t index) const\fC [virtual]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+Sample at a specific position
+.RE
+.PP
+\fBParameters\fP
+.RS 4
+\fIindex\fP Index 
+.RE
+.PP
+\fBReturns\fP
+.RS 4
+Sample at position index 
+.RE
+.PP
+
+.PP
+Implements \fBQwtSeriesData< T >\fP\&.
+.SS "template<typename T > const QVector< T > \fBQwtArraySeriesData\fP< T >::samples () const"
+
+.PP
+\fBReturns\fP
+.RS 4
+Array of samples 
+.RE
+.PP
+
+.SS "template<typename T> void \fBQwtArraySeriesData\fP< T >::setSamples (const QVector< T > & samples)"
+Assign an array of samples 
+.PP
+\fBParameters\fP
+.RS 4
+\fIsamples\fP Array of samples 
+.RE
+.PP
+
+.SS "template<typename T > size_t \fBQwtArraySeriesData\fP< T >::size () const\fC [virtual]\fP"
+
+.PP
+\fBReturns\fP
+.RS 4
+Number of samples 
+.RE
+.PP
+
+.PP
+Implements \fBQwtSeriesData< T >\fP\&.
+
+.SH "Author"
+.PP 
+Generated automatically by Doxygen for Qwt User's Guide from the source code\&.