Add buildlib from CIME for xcomps

This is copied exactly from
CIME/build_scripts/buildlib.internal_components from
ESMCI/cime@5444eae316

Author: billsacks

med_test_comps/xatm/cime_config/buildlib

@@ -1 +1 @@
-../../../../../../build_scripts/buildlib.internal_components
+../../xshare/cime_config/buildlib

med_test_comps/xglc/cime_config/buildlib

@@ -1 +1 @@
-../../../../../../build_scripts/buildlib.internal_components
+../../xshare/cime_config/buildlib

med_test_comps/xice/cime_config/buildlib

@@ -1 +1 @@
-../../../../../../build_scripts/buildlib.internal_components
+../../xshare/cime_config/buildlib

med_test_comps/xlnd/cime_config/buildlib

@@ -1 +1 @@
-../../../../../../build_scripts/buildlib.internal_components
+../../xshare/cime_config/buildlib

med_test_comps/xocn/cime_config/buildlib

@@ -1 +1 @@
-../../../../../../build_scripts/buildlib.internal_components
+../../xshare/cime_config/buildlib

med_test_comps/xrof/cime_config/buildlib

@@ -1 +1 @@
-../../../../../../build_scripts/buildlib.internal_components
+../../xshare/cime_config/buildlib

med_test_comps/xshare/cime_config/buildlib

@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+
+"""
+build cime component model library.   This buildlib script is used by all cime internal
+components.
+"""
+
+import sys, os
+
+_CIMEROOT = os.environ.get("CIMEROOT")
+if _CIMEROOT == None:
+    raise ValueError("ERROR: CIMEROOT not defined in buildlib.internal_components.")
+sys.path.append(os.path.join(_CIMEROOT, "CIME", "Tools"))
+
+from standard_script_setup import *
+from CIME.buildlib import build_cime_component_lib, parse_input
+from CIME.case import Case
+
+
+def buildlib(bldroot, libroot, case, compname=None):
+    if compname is None:
+        thisdir = os.path.dirname(os.path.abspath(__file__))
+        path, dir1 = os.path.split(thisdir)
+        _, dir2 = os.path.split(path)
+        if dir1 == "cime_config":
+            compname = dir2
+        else:
+            compname = dir1.split(".")[1]
+    build_cime_component_lib(case, compname, libroot, bldroot)
+
+
+def _main_func(args):
+    caseroot, libroot, bldroot = parse_input(args)
+    with Case(caseroot) as case:
+        buildlib(bldroot, libroot, case)
+
+
+if __name__ == "__main__":
+    _main_func(sys.argv)

med_test_comps/xwav/cime_config/buildlib

@@ -1 +1 @@
-../../../../../../build_scripts/buildlib.internal_components
+../../xshare/cime_config/buildlib