Get rid of CT_LIBC_FILE, remove useless CT_MakeAbsolutePath.

CT_LIBC_FILE:
- that one was not easy, as it had sneaked into CT_ExtractAndPatch
- which in turn made CT_ExtractAndPatch have references to C library addons
- which in turn relieved the C library _extract functions from doing their own job
- which in turn imposed some nasty tricks in CT_ExtractAndPatch
- which in turn made life easier for the DUMA _get and _extract functions
- which unveiled some bizare behavior for pushd and popd:
- if using smthg ike: 'pushd foo |bar':
- the directory is *neither* changed
- *nor* is it pushed onto the stack
- which made popd fail

CT_MakeAbsolutePath:
- used only to make CT_LOCAL_TARBALLS_DIR canonical
- which is ((almost) useless:
- hopefully, the user entered a full path already
- if it's not the case, too bad...

/trunk/scripts/build/debug/200-duma.sh | 5 1 4 0 +--
/trunk/scripts/build/libc/glibc.sh | 61 32 29 0 +++++++++++++++++---------------
/trunk/scripts/build/libc/uClibc.sh | 16 10 6 0 +++++---
/trunk/scripts/build/libc/eglibc.sh | 48 26 22 0 ++++++++++++++-----------
/trunk/scripts/crosstool.sh | 8 0 8 0 ----
/trunk/scripts/functions | 77 15 62 0 ++++++++--------------------------------
6 files changed, 84 insertions(+), 131 deletions(-)

 # Wrapper to build the tools facilities

 # List all tools facilities, and parse their scripts

 CT_TOOLS_FACILITY_LIST=

 for f in "${CT_LIB_DIR}/scripts/build/tools/"*.sh; do

     _f="$(basename "${f}" .sh)"

     _f="${_f#???-}"

     __f="CT_TOOL_${_f}"

     if [ "${!__f}" = "y" ]; then

         CT_DoLog DEBUG "Enabling tool '${_f}'"

         . "${f}"

         CT_TOOLS_FACILITY_LIST="${CT_TOOLS_FACILITY_LIST} ${_f}"

     else

         CT_DoLog DEBUG "Disabling tool '${_f}'"

     fi

 done

 # Download the tools facilities

 do_tools_get() {

     for f in ${CT_TOOLS_FACILITY_LIST}; do

         do_tools_${f}_get

     done

 }

 # Extract and patch the tools facilities

 do_tools_extract() {

     for f in ${CT_TOOLS_FACILITY_LIST}; do

         do_tools_${f}_extract

     done

 }

 # Build the tools facilities

 do_tools() {

     for f in ${CT_TOOLS_FACILITY_LIST}; do

         do_tools_${f}_build

     done

 }