testenvironment does not check for correct perl version (#12377)

add verbiage about requiring a post Apollo era perl if such a perl is detected

docs/changelog/8.x.x.txt

@@ -1,4 +1,5 @@
 8.0.1
+ - #12377 - add verbiage about requiring a post Apollo era perl if such a perl is detected
 
 8.0.0
  - #10012 - larger meta data values for multi-value fields

sbin/testEnvironment.pl

@@ -16,6 +16,15 @@ use File::Spec;
 
 my $webguiRoot;
 BEGIN {
+    if( $] < 5.010 ) {
+        print <<EOF;
+WebGUI8 requires Perl 5.10.1 or later.  Please upgrade your system perl,
+install a newer perl in /usr/local, or build one with the 'perlbrew'
+utility.  Perl 5.10.0 has serious Unicode bugs that will corrupt 
+Unicode data.  5.16.x or 5.14.x should work fine.
+EOF
+        exit 1;
+    }
     $webguiRoot = File::Spec->rel2abs(File::Spec->catdir(File::Basename::dirname(__FILE__), File::Spec->updir));
     unshift @INC, File::Spec->catdir($webguiRoot, 'lib');
 }