Change M_* symbols to MUTT_*

Changeset 23334e967dd7 created a workaround for a namespace conflict
with Solaris and derivatives.  After some discussion, the team decided
it would be best to move away from using the "M_" prefix for macros.

This patch was automatically generated by running:
  perl -wpi -e 's/\bM_(\w+)\b/MUTT_$1/g' `find . -name '*.[ch]' -print`
with the exception that sys_socket.h was exempted.  (That file will
be backed out subsequent to this commit.)

Thanks to Andras Salamon for supplying the perl script used to make
this change.

1 files changed, 1 insertions, 1 deletions

diff --git a/hcache.h b/hcache.h
index 62eaa18b..ca0b425e 100644
--- a/hcache.h
+++ b/hcache.h
@@ -35,7 +35,7 @@ void *mutt_hcache_fetch_raw (header_cache_t *h, const char *filename,
                              size_t (*keylen)(const char *fn));
 
 typedef enum {
-  M_GENERATE_UIDVALIDITY = 1 /* use gettimeofday() as value */
+  MUTT_GENERATE_UIDVALIDITY = 1 /* use gettimeofday() as value */
 } mutt_hcache_store_flags_t;
 
 /* uidvalidity is an IMAP-specific unsigned 32 bit number */