CPack: Add lzma-compressed package options

Add options to package binary and source tarballs:

 CPACK_BINARY_7Z
 CPACK_BINARY_TXZ
 CPACK_SOURCE_7Z
 CPACK_SOURCE_TXZ

Modules/CPack.cmake

@@ -426,6 +426,7 @@ if(NOT CPACK_GENERATOR)
       option(CPACK_BINARY_STGZ "Enable to build STGZ packages"    ON)
       option(CPACK_BINARY_TGZ  "Enable to build TGZ packages"     ON)
       option(CPACK_BINARY_TBZ2 "Enable to build TBZ2 packages"    OFF)
+      option(CPACK_BINARY_TXZ  "Enable to build TXZ packages"     OFF)
       option(CPACK_BINARY_DEB  "Enable to build Debian packages"  OFF)
       option(CPACK_BINARY_RPM  "Enable to build RPM packages"     OFF)
       option(CPACK_BINARY_NSIS "Enable to build NSIS packages"    OFF)
@@ -434,6 +435,7 @@ if(NOT CPACK_GENERATOR)
     option(CPACK_BINARY_NSIS "Enable to build NSIS packages" ON)
     option(CPACK_BINARY_WIX  "Enable to build WiX packages" OFF)
     option(CPACK_BINARY_ZIP  "Enable to build ZIP packages" OFF)
+    option(CPACK_BINARY_7Z   "Enable to build 7-Zip packages" OFF)
   endif()
   option(CPACK_BINARY_IFW "Enable to build IFW packages" OFF)
 
@@ -448,10 +450,12 @@ if(NOT CPACK_GENERATOR)
   cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_STGZ         STGZ)
   cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_TGZ          TGZ)
   cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_TBZ2         TBZ2)
+  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_TXZ          TXZ)
   cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_TZ           TZ)
   cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_WIX          WIX)
   cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_ZIP          ZIP)
   cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_IFW          IFW)
+  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_7Z           7Z)
 
 endif()
 
@@ -463,26 +467,32 @@ if(NOT CPACK_SOURCE_GENERATOR)
     else()
       option(CPACK_SOURCE_TBZ2 "Enable to build TBZ2 source packages" ON)
       option(CPACK_SOURCE_TGZ  "Enable to build TGZ source packages"  ON)
+      option(CPACK_SOURCE_TXZ  "Enable to build TXZ source packages"  ON)
       option(CPACK_SOURCE_TZ   "Enable to build TZ source packages"   ON)
       option(CPACK_SOURCE_ZIP  "Enable to build ZIP source packages"  OFF)
     endif()
   else()
     option(CPACK_SOURCE_ZIP "Enable to build ZIP source packages" ON)
+    option(CPACK_SOURCE_7Z  "Enable to build 7-Zip source packages" ON)
   endif()
 
   cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_CYGWIN  CygwinSource)
   cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_TGZ     TGZ)
   cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_TBZ2    TBZ2)
+  cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_TXZ     TXZ)
   cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_TZ      TZ)
   cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_ZIP     ZIP)
+  cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_7Z      7Z)
 endif()
 
 # mark the above options as advanced
 mark_as_advanced(CPACK_BINARY_CYGWIN CPACK_BINARY_PACKAGEMAKER CPACK_BINARY_OSXX11
                  CPACK_BINARY_STGZ   CPACK_BINARY_TGZ          CPACK_BINARY_TBZ2
                  CPACK_BINARY_DEB    CPACK_BINARY_RPM          CPACK_BINARY_TZ
+                 CPACK_BINARY_TXZ    CPACK_BINARY_7Z
                  CPACK_BINARY_NSIS CPACK_BINARY_WIX CPACK_BINARY_ZIP CPACK_BINARY_BUNDLE
                  CPACK_SOURCE_CYGWIN CPACK_SOURCE_TBZ2 CPACK_SOURCE_TGZ
+                 CPACK_SOURCE_TXZ    CPACK_SOURCE_7Z
                  CPACK_SOURCE_TZ CPACK_SOURCE_ZIP CPACK_BINARY_DRAGNDROP)
 
 # Set some other variables