Revert "[Indic] Import ragel-generated Indic machine in git"

This reverts commit fab7a71f11.

Conflicts:
	src/hb-ot-shape-complex-indic-machine.hh

Keeping that generated file in-tree causes problems with processes like
tinderbox  that automatically fetch and build harfbuzz.  It's harder to
bootstrap harfbuzz now (as was previously), but I'm willing to give this
another chance and see how it goes.

autogen.sh

@@ -7,6 +7,12 @@ test -n "$srcdir" || srcdir=.
 olddir=`pwd`
 cd $srcdir
 
+echo -n "checking for ragel... "
+which ragel || {
+	echo "You need to install ragel... See http://www.complang.org/ragel/"
+	exit 1
+}
+
 echo -n "checking for pkg-config... "
 which pkg-config || {
 	echo "*** No pkg-config found, please install it ***"

src/Makefile.am

@@ -252,6 +252,7 @@ arabic-table: gen-arabic-table.py ArabicShaping.txt UnicodeData.txt
 
 .PHONY: unicode-tables arabic-table indic-table
 
+BUILT_SOURCES += hb-ot-shape-complex-indic-machine.hh
 EXTRA_DIST += hb-ot-shape-complex-indic-machine.rl
 $(srcdir)/hb-ot-shape-complex-indic-machine.hh: hb-ot-shape-complex-indic-machine.rl
 	$(AM_V_GEN)$(top_srcdir)/missing --run ragel -e -F1 -o "$@.tmp" "$<" && \