configure: Replace COMMENT with NOP in ECHO

Using COMMENT the ECHO command drops the whole line under -s,
whereas using NOP (':') only drops up to the next ';' terminator.

configure/CONFIG_COMMON

@@ -81,8 +81,8 @@ COMMON_DIR = ../O.Common
 
 #-------------------------------------------------------
 # Make echo output - suppress echoing if make's '-s' flag is set
-COMMENT = \#
-ECHO = @$(if $(findstring s,$(patsubst T_A=%,,$(MAKEFLAGS))),$(COMMENT),echo)
+NOP = :
+ECHO = @$(if $(findstring s,$(patsubst T_A=%,,$(MAKEFLAGS))),$(NOP),echo)
 
 #-------------------------------------------------------
 ifdef T_A

configure/RULES.Db

@@ -121,7 +121,6 @@ MAKEDBDEPENDS = $(PERL) $(TOOLS)/makeDbDepends.pl
 
 ifndef T_A
 
-ECHO := $(if $(findstring s,$(MAKEFLAGS)),$(COMMENT),@echo)
 COMMON_DIR = .
 INSTALL_DBDS =
 INSTALL_DBS =

configure/os/CONFIG.win32-x86-borland.Common

@@ -12,7 +12,7 @@ MV = $(PERL) -MExtUtils::Command -e mv
 RM = $(PERL) -MExtUtils::Command -e rm_f
 MKDIR = $(PERL) -MExtUtils::Command -e mkpath
 RMDIR = $(PERL) -MExtUtils::Command -e rm_rf
-COMMENT = $(PERL) -e ''
+NOP = $(PERL) -e ''
 
 WIND_HOST_TYPE = x86-win32
 OSITHREAD_USE_DEFAULT_STACK = NO

configure/os/CONFIG.win32-x86-mingw.Common

@@ -15,7 +15,7 @@ MV = $(PERL) -MExtUtils::Command -e mv
 RM = $(PERL) -MExtUtils::Command -e rm_f
 MKDIR = $(PERL) -MExtUtils::Command -e mkpath
 RMDIR = $(PERL) -MExtUtils::Command -e rm_rf
-COMMENT = $(PERL) -e ''
+NOP = $(PERL) -e ''
 
 WIND_HOST_TYPE = x86-win32
 OSITHREAD_USE_DEFAULT_STACK = NO

configure/os/CONFIG.win32-x86.Common

@@ -12,7 +12,7 @@ MV = $(PERL) -MExtUtils::Command -e mv
 RM = $(PERL) -MExtUtils::Command -e rm_f
 MKDIR = $(PERL) -MExtUtils::Command -e mkpath
 RMDIR = $(PERL) -MExtUtils::Command -e rm_rf
-COMMENT = $(PERL) -e ''
+NOP = $(PERL) -e ''
 
 WIND_HOST_TYPE = x86-win32
 OSITHREAD_USE_DEFAULT_STACK = NO