Cmake reorganization

* Move all cmake-related files in a new “cmake” folder
* move nsis files in there, too, since they are templates parsed by cake
* retrieve git version once when cmake is run, and use it for both
creating version_string.h/cpp and for package naming

cmake/FindLibgcrypt.cmake

@@ -0,0 +1,46 @@
+# -*- cmake -*-
+
+# Copied from http://code.google.com/p/emeraldviewer/
+
+# - Find libgcrypt
+# Find the libgcrypt includes and library
+# This module defines
+#  LIBGCRYPT_INCLUDE_DIR, where to find gcrypt.h, etc.
+#  LIBGCRYPT_LIBRARIES, the libraries needed to use libgcrypt.
+#  LIBGCRYPT_FOUND, If false, do not try to use libgcrypt.
+# also defined, but not for general use are
+#  LIBGCRYPT_LIBRARY, where to find the libgcrypt library.
+
+FIND_PATH(LIBGCRYPT_INCLUDE_DIR gcrypt.h)
+
+SET(LIBGCRYPT_NAMES ${LIBGCRYPT_NAMES} gcrypt)
+FIND_LIBRARY(LIBGCRYPT_LIBRARY
+  NAMES ${LIBGCRYPT_NAMES}
+  )
+
+IF (LIBGCRYPT_LIBRARY AND LIBGCRYPT_INCLUDE_DIR)
+    SET(LIBGCRYPT_LIBRARIES ${LIBGCRYPT_LIBRARY})
+    SET(LIBGCRYPT_FOUND "YES")
+ELSE (LIBGCRYPT_LIBRARY AND LIBGCRYPT_INCLUDE_DIR)
+  SET(LIBGCRYPT_FOUND "NO")
+ENDIF (LIBGCRYPT_LIBRARY AND LIBGCRYPT_INCLUDE_DIR)
+
+
+IF (LIBGCRYPT_FOUND)
+   IF (NOT LIBGCRYPT_FIND_QUIETLY)
+      MESSAGE(STATUS "Found libgcrypt: '${LIBGCRYPT_LIBRARIES}' and header in '${LIBGCRYPT_INCLUDE_DIR}'")
+   ENDIF (NOT LIBGCRYPT_FIND_QUIETLY)
+ELSE (LIBGCRYPT_FOUND)
+   IF (LIBGCRYPT_FIND_REQUIRED)
+      MESSAGE(FATAL_ERROR "Could not find libgcrypt library")
+   ENDIF (LIBGCRYPT_FIND_REQUIRED)
+ENDIF (LIBGCRYPT_FOUND)
+
+# Deprecated declarations.
+SET (NATIVE_LIBGCRYPT_INCLUDE_PATH ${LIBGCRYPT_INCLUDE_DIR} )
+GET_FILENAME_COMPONENT (NATIVE_LIBGCRYPT_LIB_PATH ${LIBGCRYPT_LIBRARY} PATH)
+
+MARK_AS_ADVANCED(
+  LIBGCRYPT_LIBRARY
+  LIBGCRYPT_INCLUDE_DIR
+  )