Fix docs and build system.

Makefile.am

@@ -2,9 +2,6 @@ AUTOMAKE_OPTIONS = subdir-objects
 
 CFLAGS = -g -Wall
 
-builtin_CFLAGS = -I$(top_srcdir)/expat/lib
-builtin_LIBS = libexpat.a
-
 PARSER_CFLAGS=@PARSER_CFLAGS@
 PARSER_LIBS=@PARSER_LIBS@
 
@@ -12,11 +9,7 @@ STROPHE_FLAGS = -I$(top_srcdir)
 STROPHE_LIBS = libstrophe.a $(PARSER_LIBS) -lssl -lresolv
 
 ## Main build targets
-if BUILD_EXPAT
-lib_LIBRARIES = libstrophe.a libexpat.a
-else
 lib_LIBRARIES = libstrophe.a
-endif
 
 libstrophe_a_CFLAGS=$(STROPHE_FLAGS) $(PARSER_CFLAGS)
 libstrophe_a_SOURCES = src/auth.c src/conn.c src/ctx.c \
@@ -30,10 +23,6 @@ else
 libstrophe_a_SOURCES += src/parser_libxml2.c
 endif
 
-libexpat_a_CFLAGS=-DXML_DTD -DXML_NS -DXML_CONTEXT_BYTES=1024 -DXML_STATIC \
-	-I$(top_srcdir)/expat/lib
-libexpat_a_SOURCES=expat/lib/xmlparse.c expat/lib/xmltok.c expat/lib/xmlrole.c
-
 
 ## Examples
 noinst_PROGRAMS = examples/active examples/roster examples/basic examples/bot