Revise BBE target

BootCommands 1.39 and later allow 1k command lines with *DO so there's no need to override the definition of ${PERL} any more.
Also, add comments to AAsmModule about the various CUSTOM overrides possible.

Version 6.45. Tagged as 'BuildSys-6_45'

Makefile

@@ -2,11 +2,9 @@
 #
 # $Id$
 #
-include Makefiles:StdTools
+include StdTools
 
 BBETYPE = buildsys
-# override definition of PERL for the time being - the FilterComp2 command line is too long for argument passing via the do command
-PERL = perl
 bbe-buildsys: bbe-generic-resources-get-alias
 	BBE_Export_Dir ImageName
 	${RM} ${BBEDIR}.ImageName.Version

Makefiles/AAsmModule

@@ -43,6 +43,11 @@ INCLUDED_AASMMODULE = YES
 # EXP_HDR         (opt) (directory for exported assembler interface headers)
 # ROM_DEPEND      (opt) (any extra dependency to assert on ROM_TARGET)
 # SA_DEPEND       (opt) (any extra dependency to assert on SA_TARGET and DBG_TARGET)
+# CUSTOMEXP       (opt) (set to "custom" to override the export rules)
+# CUSTOMROM       (opt) (set to "custom" to override the rom rules)
+# CUSTOMSA        (opt) (set to "custom" to override the standalone rules)
+# CUSTOMDBG       (opt) (set to "custom" to override the debug rules)
+# CUSTOMGPA       (opt) (set to "custom" to override the GPA rules)
 #
 #
 # It relies on the following from the build system:

VersionNum

-/* (6.44)
+/* (6.45)
  *
  * This file is automatically maintained by srccommit, do not edit manually.
  * Last processed by srccommit version: 1.1.
  *
  */
-#define Module_MajorVersion_CMHG        6.44
+#define Module_MajorVersion_CMHG        6.45
 #define Module_MinorVersion_CMHG        
-#define Module_Date_CMHG                19 Jun 2014
+#define Module_Date_CMHG                28 Jun 2014
 
-#define Module_MajorVersion             "6.44"
-#define Module_Version                  644
+#define Module_MajorVersion             "6.45"
+#define Module_Version                  645
 #define Module_MinorVersion             ""
-#define Module_Date                     "19 Jun 2014"
+#define Module_Date                     "28 Jun 2014"
 
-#define Module_ApplicationDate          "19-Jun-14"
+#define Module_ApplicationDate          "28-Jun-14"
 
 #define Module_ComponentName            "BuildSys"
 #define Module_ComponentPath            "castle/RiscOS/BuildSys"
 
-#define Module_FullVersion              "6.44"
-#define Module_HelpVersion              "6.44 (19 Jun 2014)"
-#define Module_LibraryVersionInfo       "6:44"
+#define Module_FullVersion              "6.45"
+#define Module_HelpVersion              "6.45 (28 Jun 2014)"
+#define Module_LibraryVersionInfo       "6:45"