11e45667d4e291b3038ccda729a1cdf5bcaf004a
braney
  Mon Jul 11 15:46:54 2016 -0700
incorporate htslib in kent src, remove USE_BAM, USE_SAMTABIX, USE_TABIX
defines, modify a bunch of makefiles to include kentSrc variable
pointing to top of the tree.

diff --git src/ai/letterChain/makefile src/ai/letterChain/makefile
index 520a4e6..7288c97 100644
--- src/ai/letterChain/makefile
+++ src/ai/letterChain/makefile
@@ -1,14 +1,15 @@
+kentSrc = ../..
 include ../../inc/common.mk
 
 L += -lm
 MYLIBDIR = ../../lib/${MACHTYPE}
 MYLIBS =  ${MYLIBDIR}/jkweb.a
 
 O = letterChain.o
 
 letterChain: $O ${MYLIBS}
 	${CC} ${COPT} -o ${BINDIR}/letterChain $O ${MYLIBS} $L
 	${STRIP} ${BINDIR}/letterChain${EXE}
 
 clean:
 	rm -f $O