build fixes

Makefile.am

 lib_LTLIBRARIES = libopus.la
 
-INCLUDES = -I$(top_srcdir)/libcelt -I$(top_srcdir)/silk
+INCLUDES = -I$(top_srcdir)/libcelt -I$(top_srcdir)/silk -I$(top_srcdir)/silk/float -I$(top_srcdir)/silk/fixed
 
 include celt_sources.mk
 include silk_sources.mk

configure.ac

@@ -214,11 +214,5 @@ AC_MSG_RESULT([
 ------------------------------------------------------------------------
 ])
 
-if test "x$tools" = "x"; then 
-echo "**IMPORTANT**"
-echo "You don't seem to have the development package for libogg (libogg-devel) available. Only the library will be built (no encoder/decoder executable)"
-echo "You can download libogg from http://www.vorbis.com/download.psp"
-fi
-
 echo "Type \"make; make install\" to compile and install";
 echo "Type \"make check\" to run the test suite";

silk_sources.mk

@@ -98,7 +98,7 @@ silk/SKP_Silk_stereo_encode_pred.c \
 silk/SKP_Silk_stereo_find_predictor.c
 
 
-ifdef FIXED_POINT
+if FIXED_POINT
 SILK_SOURCES += \
 silk/fixed/SKP_Silk_LTP_analysis_filter_FIX.c \
 silk/fixed/SKP_Silk_LTP_scale_ctrl_FIX.c \