Add FindCrypt.cmake module

This allows to find libcrypt.so by full path, and avoid being dependent
on the compiler directory search.

Re ECFLOW-1987

cmake/Dependencies.cmake

@@ -223,6 +223,20 @@ if (ENABLE_SSL)
 endif()
 
 
+# =========================================================================================
+# Crypt
+# =========================================================================================
+ecbuild_info( "Locating Crypt" )
+
+find_package(Crypt)
+
+ecbuild_info( "Crypt details:" )
+ecbuild_info( " * Crypt_FOUND        : ${Crypt_FOUND}" )
+ecbuild_info( " * Crypt_INCLUDE_DIRS : ${Crypt_INCLUDE_DIRS}" )
+ecbuild_info( " * Crypt_LIBRARIES    : ${Crypt_LIBRARIES}" )
+
+ecbuild_info( "Found Crypt at ${Crypt_INCLUDE_DIRS}" )
+
 # =========================================================================================
 # Dependency: Qt
 # =========================================================================================