Fix warnings in butc, tbutc, and butm

Fix warnings in butc, tbutc, and butm

tbutc:
 - Ignore warnings for dump.c

butc/dump.c:
 - butm_WriteFileData takes a char*, no need to cast buffer

 - volumeHeader_hton takes a struct volumeHeader*, though, need to cast
   buffer there

 - Ignore strict prototypes

butc/recoverDb.c:
 - scanVolData takes a uint*, not an int*

 - Initialize nbytes to 0

 - Remove warning inhibition

butc/tcmain.c:
 - atocl takes an int*, not a uint*

 - Ignore implicit function declaration warnings

butc/tcudbprocs.c:
 - Ignore implicit function declaration warnings (ubik stuff)

butm/file_tm.c:
 - Include sys/wait.h for the waitpid() prototype

Reviewed-on: http://gerrit.openafs.org/635
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>