Version number now set in configure, available through Makefile.global

and config.h. Adjusted all referring code.

Scrapped pg_version and changed initdb accordingly. Integrated
src/utils/version.c into src/backend/utils/init/miscinit.c. Changed all
callers.

Set version number to `7.1devel'. (Non-numeric version suffixes now allowed.)

configure.in

@@ -6,6 +6,10 @@ AC_CONFIG_HEADER(src/include/config.h)
 AC_PREREQ(2.13)
 AC_CONFIG_AUX_DIR(`pwd`/config)
 
+VERSION='7.1devel'
+AC_SUBST(VERSION)
+AC_DEFINE_UNQUOTED(PG_VERSION, "$VERSION")
+
 mkinstalldirs="\$(SHELL) \$(top_srcdir)/config/mkinstalldirs"
 AC_SUBST(mkinstalldirs)
 
@@ -309,13 +313,13 @@ AC_PROG_CPP
 AC_PROG_GCC_TRADITIONAL
 AC_SUBST(GCC)
 
-if test "$CC" = "gcc"
-then
-	CC_VERSION=`${CC} --version`
+if test x"$GCC" = x"yes" ; then
+  cc_string="GCC `${CC} --version`"
 else
-	CC_VERSION=""
+  cc_string=$CC
 fi
-AC_SUBST(CC_VERSION)
+AC_DEFINE_UNQUOTED(PG_VERSION_STR, ["PostgreSQL $VERSION on $host, compiled by $cc_string"], [A canonical string containing the version number, platform, and C compiler])
+
 
 
 dnl We exclude tcl support unless user says --with-tcl
@@ -1198,6 +1202,5 @@ AC_OUTPUT(
 	src/Makefile.global
 	src/backend/port/Makefile
 	src/backend/catalog/genbki.sh
-	src/include/version.h
 	src/test/regress/GNUmakefile
 )