Get rid of PRODUCT, unused I hope

Change-Id: I934158f892daf3ae36f265e6bc95fd9987a05ca5

config_host.mk.in

@@ -433,7 +433,6 @@ export POPPLER_LIBS=$(gb_SPACE)@POPPLER_LIBS@
 export POSTGRESQL_INC=@POSTGRESQL_INC@
 export POSTGRESQL_LIB=@POSTGRESQL_LIB@
 export PREFIXDIR=@PREFIXDIR@
-export PRODUCT=@PRODUCT@
 export PRODUCTNAME=@PRODUCTNAME@
 export PRODUCTVERSION=@PRODUCTVERSION@
 export PROEXT=@PROEXT@

configure.ac

@@ -3676,7 +3676,6 @@ if test -n "$enable_dbgutil" -a "$enable_dbgutil" != "no"; then
     # versions (in case there are version specific problems with it)
     MSVC_USE_DEBUG_RUNTIME="TRUE"
     PROEXT=""
-    PRODUCT=""
 
     AC_MSG_RESULT([yes])
     # cppunit and graphite expose STL in public headers
@@ -3708,14 +3707,11 @@ if test -n "$enable_dbgutil" -a "$enable_dbgutil" != "no"; then
 else
     ENABLE_DBGUTIL=""
     MSVC_USE_DEBUG_RUNTIME=""
-    # PRODUCT is old concept, still used by build.pl .
-    PRODUCT="full"
     PROEXT=".pro"
     AC_MSG_RESULT([no])
 fi
 AC_SUBST(ENABLE_DBGUTIL)
 AC_SUBST(MSVC_USE_DEBUG_RUNTIME)
-AC_SUBST(PRODUCT)
 AC_SUBST(PROEXT)
 
 dnl Set the ENABLE_DEBUG variable.

solenv/doc/gbuild/solenv/gbuild/gbuild.mk

@@ -39,7 +39,6 @@ static const Path UPD;
 static const String LIBXML_CFLAGS;
 static const String OS;
 static const Bool DEBUG;
-static const Bool PRODUCT;
 
 // gbuild global variables derived from the configure/environment
 // some of these are defined per platform
@@ -47,8 +46,6 @@ namespace gb
 {
     /// building with generated dependencies
     static const Bool FULLDEPS;
-    /// product build or non-product build with additional assertions and tests
-    static const Bool PRODUCT;
     /// command to run awk scripts
     static const Command AWK;
     /// command to compile c source files

solenv/gbuild/gbuild.mk

@@ -26,7 +26,6 @@ GBUILDDIR:=$(SRCDIR)/solenv/gbuild
 # JAVA_HOME
 # LIBXML_CFLAGS
 # OS
-# PRODUCT
 # SOLARINC
 # SOLARLIB
 # UPD
@@ -87,8 +86,6 @@ ifneq ($(strip $(TIMELOG)$(timelog)),)
 gb_TIMELOG := 1
 endif
 
-# This used to be PRODUCT="" (for the same meaning as ENABLE_DBGUTIL="TRUE"),
-# but the product meaning is now only confusing.
 ifneq ($(ENABLE_DBGUTIL),)
 gb_ENABLE_DBGUTIL := $(true)
 else