Add a thread-properties API
(Based on proposal at https://sourceware.org/glibc/wiki/ThreadPropertiesAPI)

This includes API to:
 - locate static and dynamic TLS
 - register thread-exit and  dynamic TLS creation/destruction callbacks

Change-Id: Icd9d29a5b2f47495395645e19d3b2c96826f19c8
diff --git a/libc/bionic/libc_init_static.cpp b/libc/bionic/libc_init_static.cpp
index cf5423e..e3a447d 100644
--- a/libc/bionic/libc_init_static.cpp
+++ b/libc/bionic/libc_init_static.cpp
@@ -147,6 +147,7 @@
     mod.first_generation = kTlsGenerationFirst;
 
     modules.module_count = 1;
+    modules.static_module_count = 1;
     modules.module_table = &mod;
   } else {
     layout.reserve_exe_segment_and_tcb(nullptr, progname);