NM/01 Workround for PCRE version dependancy in version reporting
Bugzilla 1073
+TF/01 Update valgrind.h and memcheck.h to copies from valgrind-3.6.0.
+ This fixes portability to compilers other than gcc, notably
+ Solaris CC and HP-UX CC. Fixes Bugzilla 1050.
+
Exim version 4.74
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