Add ClangBuildAnalyzer automation script

ClangBuildAnalyzer.ini

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+# How many of most expensive things are reported?
+[counts]
+
+# files that took most time to parse
+fileParse = 10
+# files that took most time to generate code for
+fileCodegen = 10
+# functions that took most time to generate code for
+function = 30
+# header files that were most expensive to include
+header = 10
+# for each expensive header, this many include paths to it are shown
+headerChain = 10
+# templates that took longest to instantiate
+template = 30
+
+
+# Minimum times (in ms) for things to be recorded into trace
+[minTimes]
+
+# parse/codegen for a file
+file = 10
+
+
+[misc]
+
+# Maximum length of symbol names printed; longer names will get truncated
+maxNameLength = 70
+
+# Only print "root" headers in expensive header report, i.e.
+# only headers that are directly included by at least one source file
+onlyRootHeaders = true

scripts/analyze-build.sh

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+# Simple automation script to run ClangBuildAnalyzer over the pioneer codebase
+# and generate reports.
+# Requires a clean build with the -DUSE_TIME_TRACE=1 cmake option passed to
+# ./bootstrap, and should be run in the top-level directory of the pioneer repo
+
+ANALYZER="$1"
+if [ -z "$ANALYZER" ]; then
+	ANALYZER="ClangBuildAnalyzer"
+fi
+
+$ANALYZER --all build/ build/build-pioneer-trace.bin 2&>/dev/null
+$ANALYZER --analyze build/build-pioneer-trace.bin > build/build-pioneer-trace-$(date +%F-%T).txt