don't use deprecated UsePkgConfig.cmake file in FindLibXslt.cmake, some cosmetics

-use find_package(PkgConfig) instead of include(UsePkgConfig)
-remove the "if already cached make silent" logic, this is already handled by find_package_handle_standard_args()
-remove the if(WIN32) around pkg-config, it shouldn't be necessary

Alex

Modules/FindLibXml2.cmake

@@ -1,4 +1,4 @@
-# - Try to find LibXml2
+# - Try to find the LibXml2 xml processing library
 # Once done this will define
 #
 #  LIBXML2_FOUND - System has LibXml2
@@ -21,20 +21,13 @@
 # (To distributed this file outside of CMake, substitute the full
 #  License text for the above reference.)
 
-IF (LIBXML2_INCLUDE_DIR AND LIBXML2_LIBRARIES)
-   # in cache already
-   SET(LibXml2_FIND_QUIETLY TRUE)
-ENDIF (LIBXML2_INCLUDE_DIR AND LIBXML2_LIBRARIES)
+# use pkg-config to get the directories and then use these values
+# in the FIND_PATH() and FIND_LIBRARY() calls
+FIND_PACKAGE(PkgConfig)
+PKG_CHECK_MODULES(PC_LIBXML libxml-2.0)
+SET(LIBXML2_DEFINITIONS ${PC_LIBXML_CFLAGS_OTHER})
 
-IF (NOT WIN32)
-   # use pkg-config to get the directories and then use these values
-   # in the FIND_PATH() and FIND_LIBRARY() calls
-   FIND_PACKAGE(PkgConfig)
-   PKG_CHECK_MODULES(PC_LIBXML libxml-2.0)
-   SET(LIBXML2_DEFINITIONS ${PC_LIBXML_CFLAGS_OTHER})
-ENDIF (NOT WIN32)
-
-FIND_PATH(LIBXML2_INCLUDE_DIR libxml/xpath.h
+FIND_PATH(LIBXML2_INCLUDE_DIR NAMES libxml/xpath.h
    HINTS
    ${PC_LIBXML_INCLUDEDIR}
    ${PC_LIBXML_INCLUDE_DIRS}

Modules/FindLibXslt.cmake

@@ -1,4 +1,4 @@
-# - Try to find LibXslt
+# - Try to find the LibXslt library
 # Once done this will define
 #
 #  LIBXSLT_FOUND - system has LibXslt
@@ -20,26 +20,23 @@
 # (To distributed this file outside of CMake, substitute the full
 #  License text for the above reference.)
 
-IF (LIBXSLT_INCLUDE_DIR AND LIBXSLT_LIBRARIES)
-   # in cache already
-   SET(LibXslt_FIND_QUIETLY TRUE)
-ENDIF (LIBXSLT_INCLUDE_DIR AND LIBXSLT_LIBRARIES)
-
-IF (NOT WIN32)
-   # use pkg-config to get the directories and then use these values
-   # in the FIND_PATH() and FIND_LIBRARY() calls
-   INCLUDE(UsePkgConfig)
-   PKGCONFIG(libxslt _LibXsltIncDir _LibXsltLinkDir _LibXsltLinkFlags _LibXsltCflags)
-   SET(LIBXSLT_DEFINITIONS ${_LibXsltCflags})
-ENDIF (NOT WIN32)
-
-FIND_PATH(LIBXSLT_INCLUDE_DIR libxslt/xslt.h
-    ${_LibXsltIncDir}
+# use pkg-config to get the directories and then use these values
+# in the FIND_PATH() and FIND_LIBRARY() calls
+FIND_PACKAGE(PkgConfig)
+PKG_CHECK_MODULES(PC_LIBXSLT libxslt)
+SET(LIBXSLT_DEFINITIONS ${PC_LIBXSLT_CFLAGS_OTHER})
+
+
+FIND_PATH(LIBXSLT_INCLUDE_DIR NAMES libxslt/xslt.h
+    HINTS 
+   ${PC_LIBXSLT_INCLUDEDIR}
+   ${PC_LIBXSLT_INCLUDE_DIRS}
   )
 
 FIND_LIBRARY(LIBXSLT_LIBRARIES NAMES xslt libxslt
-    PATHS
-    ${_LibXsltLinkDir}
+    HINTS
+   ${PC_LIBXSLT_LIBDIR}
+   ${PC_LIBXSLT_LIBRARY_DIRS}
   )
 
 INCLUDE(FindPackageHandleStandardArgs)