don't clobber the user's settings that configure already put together for us

--- a/libhfsp/src/Makefile.am
+++ b/libhfsp/src/Makefile.am
@@ -27,7 +27,5 @@
 	    blockiter.c btree.c btreecheck.c fscheck.c hfstime.c libhfsp.c os.c unicode.c \
 	    record.c volume.c partitions.c 
 
-CFLAGS = -O2 -Wall
-
 # I need to clean up these headers first before i can distribute them ...		
 # include_HEADERS = apple.h hfs.h hfsp.h libhfsp.h 
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -8,8 +8,6 @@
 
 INCLUDES = -I../libhfsp/src
 
-CFLAGS = -O2 -Wall
-
 bin_PROGRAMS = hpmount hpumount hpls hpcd hpcopy hppwd hpfsck hprm hpmkdir
 
 hpmount_SOURCES = hpmount.c hpcache.c hfsputil.c glob.c dstring.c dlist.c