Don't shadow standard headers

@italic on the AUR stated that bfs from the AUR fails to build on
Manjaro.  From the build log, it seems like <time.h> doesn't get
included properly.  I assume it's picking up ./time.h instead.

I couldn't reproduce the build issue in the default configuration, but
it does fail with EXTRA_CFLAGS="-I." which isn't good.  So rename
everything with an x prefix to stop clashing.

Link: https://aur.archlinux.org/packages/bfs#comment-856102
Link: https://paste.rs/eqR

1 files changed, 3 insertions, 3 deletions

diff --git a/main.c b/main.c
index 2ad24a4..b40d245 100644
--- a/main.c
+++ b/main.c
@@ -43,13 +43,13 @@
  *     - fsade.[ch]    (a facade over non-standard filesystem features)
  *     - mtab.[ch]     (parses the system's mount table)
  *     - pwcache.[ch]  (a cache for the user/group tables)
- *     - regex.[ch]    (regular expression support)
- *     - spawn.[ch]    (spawns processes)
  *     - stat.[ch]     (wraps stat(), or statx() on Linux)
- *     - time.[ch]     (date/time handling utilities)
  *     - trie.[ch]     (a trie set/map implementation)
  *     - typo.[ch]     (fuzzy matching for typos)
  *     - util.[ch]     (everything else)
+ *     - xregex.[ch]    (regular expression support)
+ *     - xspawn.[ch]    (spawns processes)
+ *     - xtime.[ch]    (date/time handling utilities)
  */
 
 #include "ctx.h"