Updates version number to 0.4.171556851.20171009.

Significant changes:
- Changed BEP JSON in bazel_build.py to be per-pid.
- Reverted forced dependencies for dSYM propagation.

--
PiperOrigin-RevId: 171561691
MOS_MIGRATED_REVID=171561691
diff --git a/src/XcodeConfig/TulsiVersion.xcconfig b/src/XcodeConfig/TulsiVersion.xcconfig
index 55eb7b4..ee35958 100644
--- a/src/XcodeConfig/TulsiVersion.xcconfig
+++ b/src/XcodeConfig/TulsiVersion.xcconfig
@@ -8,8 +8,8 @@
 // Version number (recorded into the Info.plist)
 TULSI_VERSION_MAJOR = 0
 TULSI_VERSION_MINOR = $(GOOGLE_VERSION_BUILDNUMBER)
-TULSI_VERSION_FIXLEVEL = 171049905
-TULSI_VERSION_BUILDNUMBER = 20171004
+TULSI_VERSION_FIXLEVEL = 171556851
+TULSI_VERSION_BUILDNUMBER = 20171009
 
 TULSI_VERSION_COPYRIGHT = 2015-2017