LLVM optimization remarks.

Added support for LLVM optimization remarks to the GCC c/c++ error
parser. They were falsly treated as errors (OtherError). Now they are
treated as generic infos. GCC has no diagnostic messages of 'remark'
type. Since GCC and LLVM messages are very similar, no separate LLVM
error parser was created.

Fixes eclipse-cdt#752

core/org.eclipse.cdt.core/META-INF/MANIFEST.MF

@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.cdt.core; singleton:=true
-Bundle-Version: 8.4.100.qualifier
+Bundle-Version: 8.4.200.qualifier
 Bundle-Activator: org.eclipse.cdt.core.CCorePlugin
 Bundle-Vendor: %providerName
 Bundle-Localization: plugin

core/org.eclipse.cdt.core/plugin.properties

@@ -61,7 +61,8 @@ CDTGNUCErrorParser.regex.ReportedOnlyOncePerInputFile=(.*?):(\\d+):(\\d+:)? .*th
 CDTGNUCErrorParser.regex.InstantiatedFromHere=(.*?):(\\d+):(\\d+:)?\\s*(.*((instantiated)|(required)) from .*)
 CDTGNUCErrorParser.regex.SkippingInstantiationContexts=(.*?):(\\d+):(\\d+:)?\\s*(\\[\\s*skipping \\d+ instantiation context.*)
 CDTGNUCErrorParser.regex.InConstexprExpansion=(.*?):(\\d+):(\\d+:)?\\s*(in 'constexpr' expansion of.*)
-CDTGNUCErrorParser.regex.GenericInfo=(.*?):(\\d+):(\\d+:)?\\s*(([Nn]ote)|(NOTE)|([Ii]nfo)|(INFO)): (.*)
+# 'remark:' messages are LLVM optimization remarks.
+CDTGNUCErrorParser.regex.GenericInfo=(.*?):(\\d+):(\\d+:)?\\s*(([Nn]ote)|(NOTE)|([Ii]nfo)|(INFO)|(remark)): (.*)
 CDTGNUCErrorParser.regex.ParseErrorBefore=(.*?):(\\d+):(\\d+:)? (parse error before.*[`'"](.*)['"].*)
 CDTGNUCErrorParser.regex.ErrorUndeclared=(.*?):(\\d+):(\\d+:)? [Ee]rror: ([`'"](.*)['"] undeclared .*)
 CDTGNUCErrorParser.regex.ErrorConflictingTypesFor=(.*?):(\\d+):(\\d+:)? [Ee]rror: (conflicting types for .*[`'"](.*)['"].*)

core/org.eclipse.cdt.core/plugin.xml

@@ -242,7 +242,7 @@
                severity="Error"
                variable-expr="$3"/>
          <pattern description-expr="$7" eat-processed-line="true" file-expr="$1" line-expr="$2" regex="%CDTGNUCErrorParser.regex.GenericWarning" severity="Warning"/>
-         <pattern description-expr="$9" eat-processed-line="true" file-expr="$1" line-expr="$2" regex="%CDTGNUCErrorParser.regex.GenericInfo" severity="Info"/>
+         <pattern description-expr="$10" eat-processed-line="true" file-expr="$1" line-expr="$2" regex="%CDTGNUCErrorParser.regex.GenericInfo" severity="Info"/>
          <pattern description-expr="$4" eat-processed-line="true" file-expr="$1" line-expr="$2" regex="%CDTGNUCErrorParser.regex.OtherError" severity="Error"/>
       </errorparser>
    </extension>