fix posix compatibility

configure

@@ -155,18 +155,18 @@ while [ 0 -lt $# ]; do
 done
 
 #end the qmake options
-if [ $config_specified == 1 ]; then 
+if [ $config_specified = 1 ]; then 
     config="$config\"";
 else
     config="$config release\"";
 fi
 
-if [ $with_otf == 1 -a "$includepath" = "\"INCLUDEPATH+=" ]; then
+if [ $with_otf = 1 -a "$includepath" = "\"INCLUDEPATH+=" ]; then
     includepath="$includepath general/otf/otflib/"
     dependpath="$dependpath general/otf/otflib/"
 fi
 
-if [ $with_otf == 1 -a "$libs" = "\"LIBS+=" ]; then
+if [ $with_otf = 1 -a "$libs" = "\"LIBS+=" ]; then
     libs="$libs general/otf/otflib/.libs/libotf.a -Lgeneral/otf/otflib/.libs"
 fi
 
@@ -208,7 +208,7 @@ cat > "$makefile" <<EOF
 ########################################################################
 EOF
 
-if [ $with_otf == 1 -a $with_otf_default == 1 ]; then # set the directory... should be decided by the user, we will see after how to do beautiful options :)
+if [ $with_otf = 1 -a $with_otf_default = 1 ]; then # set the directory... should be decided by the user, we will see after how to do beautiful options :)
 
 cat >> "$makefile" <<EOF
 OTFLIB_DIR = ./src/general/otf
@@ -275,7 +275,7 @@ clean:
 cleanall:	clean
 EOF
 
-if [ $with_otf == 1 -a $with_otf_default == 1 ]; then
+if [ $with_otf = 1 -a $with_otf_default = 1 ]; then
     cat >>"$makefile" <<EOF
 	make -C \$(OTFLIB_DIR) clean
 EOF
@@ -288,7 +288,7 @@ fi
 
 distclean:	cleanall
 EOF
-if [ $with_otf == 1 ]; then
+if [ $with_otf = 1 ]; then
     cat >>"$makefile" <<EOF
 	make -C \$(OTFLIB_DIR) distclean
 EOF
@@ -300,7 +300,7 @@ fi
 EOF
 
 
-if [ $with_otf == 1 -a $with_otf_default == 1 ]; then
+if [ $with_otf = 1 -a $with_otf_default = 1 ]; then
     echo >&2 "Configuration of the otf library"
     cd $OTFLIB_DIR && ./configure
 fi