Build Mac: fix bugs and add comments to build scripts

Fixes some copy and paste bugs reported by Charlie Fenton.
Added ScreenSaver target aka screensaver coordinator which was missing from the CI build script.

mac_build/buildMacBOINC-CI.sh

@@ -140,6 +140,9 @@ if [ $retval -ne 0 ]; then cd ..; exit 1; fi
 #source BuildMacBOINC.sh ${config} -noclean -target ss_app -setting HEADER_SEARCH_PATHS "../api/ ../samples/jpeglib/ ${cache_dir}/include ${cache_dir}/include/freetype2"  -setting LIBRARY_SEARCH_PATHS "${libSearchPath} ${cache_dir}/lib" | $beautifier; retval=${PIPESTATUS[0]}
 #if [ $retval -ne 0 ]; then cd ..; exit 1; fi
 
+source BuildMacBOINC.sh ${config} -noclean -target ScreenSaver -setting GCC_ENABLE_OBJC_GC "unsupported" | $beautifier; retval=${PIPESTATUS[0]}
+if [ $retval -ne 0 ]; then cd ..; exit 1; fi
+
 source BuildMacBOINC.sh ${config} -noclean -target boinc_opencl | $beautifier; retval=${PIPESTATUS[0]}
 if [ $retval -ne 0 ]; then cd ..; exit 1; fi
 

mac_build/buildc-ares.sh

@@ -46,7 +46,7 @@
 
 doclean=""
 lprefix="/tmp/installed-c-ares"
-libPath="lib/.libs"
+libPath=".libs"
 while [[ $# -gt 0 ]]; do
     key="$1"
     case $key in

mac_build/buildcurl.sh

@@ -82,7 +82,7 @@ fi
 
 doclean=""
 lprefix=""
-libPath=".libs"
+libPath="libs/.libs"
 libcares="/tmp/installed-c-ares"
 while [[ $# -gt 0 ]]; do
     key="$1"
@@ -163,6 +163,7 @@ else
     # curl configure and make expect a path to _installed_ c-ares-1.11.0
     # so we temporarily installed c-ares at a path that does not contain spaces.
     # buildc-ares.sh installed c-ares to /tmp/installed-c-ares
+    # and configured c-ares with prefix=/tmp/installed-c-ares
     if [ ! -f "${libcares}/libcares.a" ]; then
         cd ../c-ares-1.11.0 || return 1
         make install

mac_build/buildfreetype.sh

@@ -129,14 +129,16 @@ rm -fR objs/*.*
 rm -fR objs/*
 cp -p README-objs objs/README
 rm -f README-objs
+# this directory is only used when no --prefix argument was given
 rm -fR "../freetype_install/"
 
+./configure --enable-shared=NO --prefix=${lprefix} --host=i386
+if [ $? -ne 0 ]; then return 1; fi
+
 if [ "${doclean}" = "yes" ]; then
     make clean
 fi
 
-./configure --enable-shared=NO --prefix=${lprefix} --host=i386
-if [ $? -ne 0 ]; then return 1; fi
 make 1>/dev/null
 if [ $? -ne 0 ]; then return 1; fi
 
@@ -172,7 +174,9 @@ make install 1>/dev/null
 if [ $? -ne 0 ]; then return 1; fi
 
 # remove installed items not needed by ftgl build
-rm -fR "${lprefix}/share"
+# this directory is only used when no --prefix argument was given
+rm -fR "../freetype_install/share"
+rm -fR "../freetype_install/lib"
 
 lprefix=""
 export CC="";export CXX=""