[vte] build: print version of libpcre2-8 when not found

[Hashem Nasarat <hnasarat src gnome org>]

commit 9a7d421694a9e6993aec1fc6700b1278eeeca1dc
Author: Hashem Nasarat <hashem riseup net>
Date:   Sun Jan 31 12:45:05 2016 -0500

    build: print version of libpcre2-8 when not found
    
    I spent a few minutes being confused becuase I had the library installed
    but it was too old. The standard PKG_CHECK_MODULES macro error message
    prints out the expected version, so this custom one should too.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=761369

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index b1ec2d5..e738a2d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -245,7 +245,7 @@ if test "$with_pcre2" = "yes"; then
   PCRE2_PKGS="libpcre2-8 >= $PCRE2_REQUIRED"
 
   PKG_CHECK_MODULES([PCRE2],[$PCRE2_PKGS],,
-    [AC_MSG_ERROR([PCRE2 requested but libpcre2-8 not found. Use --without-pcre2 to disable PCRE2])])
+    [AC_MSG_ERROR([libpcre2-8 version $PCRE2_REQUIRED requested but not found. Use --without-pcre2 to 
disable PCRE2])])
 
   AC_DEFINE([WITH_PCRE2],[1],[Define to 1 to enable pcre2 support])
 fi