Import ACPICA 20150204.vendor/acpica/20150204

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+04 February 2015. Summary of changes for version 20150204:
+
+This release is available at https://acpica.org/downloads
+
+ACPICA kernel-resident subsystem:
+
+Updated all ACPICA copyrights and signons to 2014. Added the 2014 
+copyright to all module headers and signons, including the standard Linux 
+header. This affects virtually every file in the ACPICA core subsystem, 
+iASL compiler, all ACPICA utilities, and the test suites.
+
+Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
+A raw gpe handling mechanism was created to allow better handling of GPE
+storms that aren't easily managed by the normal handler. The raw handler
+allows disabling/renabling of the the GPE so that interrupt storms can be
+avoided in cases where events cannot be timely serviced. In this scenario,
+handlers should use the AcpiSetGpe() API to disable/enable the GPE. This API
+will leave the reference counts undisturbed, thereby preventing unintentional
+clearing of the GPE when the intent in only to temporarily disable it. Raw
+handlers allow enabling and disabling of a GPE by removing GPE register
+locking. As such, raw handlers much provide their own locks while using
+GPE API's to protect access to GPE data structures.
+Lv Zheng
+
+Events: Always modify GPE registers under the GPE lock.
+Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
+values. Reported as bug by joe.liu@apple.com.
+
+Unix makefiles: Separate option to disable optimizations and _FORTIFY_SOURCE.
+This change removes the _FORTIFY_SOURCE flag from the NOOPT disable option and
+creates a separate flag (NOFORTIFY) for this purpose. Some toolchains may
+define _FORTIFY_SOURCE which leads redefined errors when building ACPICA. This
+allows disabling the option without also having to disable optimazations.
+David Box
+
+  Current Release:
+    Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
+    Debug Version:     199.2K Code, 82.4K Data, 281.6K Total
+
+----------------------------------------
 07 November 2014. Summary of changes for version 20141107:
 
 This release is available at https://acpica.org/downloads