Try to find the LibXslt library

Once done this will define

LIBXSLT_FOUND - system has LibXslt
LIBXSLT_INCLUDE_DIR - the LibXslt include directory
LIBXSLT_LIBRARIES - Link these to LibXslt
LIBXSLT_DEFINITIONS - Compiler switches required for using LibXslt
LIBXSLT_VERSION_STRING - version of LibXslt found (since CMake 2.8.8)

Additionally, the following two variables are set (but not required for using xslt):

LIBXSLT_EXSLT_LIBRARIES - Link to these if you need to link against the exslt library
LIBXSLT_XSLTPROC_EXECUTABLE - Contains the full path to the xsltproc executable if found