The index name in MaterializedViewMeta is still with `__doris_shadow` prefix
after schema change finished.
In this CL, I just remove the index name field in MaterializedViewMeta,
so that it would makes managing change of names less error-prone.
Fix direct compilation failed：
fix compile thirdparty in ubuntu will install libs to lib dir instead of lib64
fix compile error in gcc5 due to the defect of c++11 (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60970)
fix gcc version check will not work on some OS
* Support for custom build toolchains
ISSUE #297
Locate the header file path of DORIS_GCC_HOME, add them to the CPLUS_INCLUDE_PATH environment variable.
So clang can find it.
* Compatible with custom toolchain for clang
ISSUE #297
1. Find default header file paths of DORIS_GCC_HOME and set as enviroment variable CLANG_COMPATIBLE_FLAGS.
2. Explicitly add these paths to CLANG_INCLUDE_FLAGS.
* Reduce UT binary size
Almost every module depend on ExecEnv, and ExecEnv contains all
singleton, which make UT binary contains all object files.
This patch seperate ExecEnv's initial and destory to anthor file to
avoid other file's dependence. And status.cc include debug_util.h which
depend tuple.h tuple_row.h, and I move get_stack_trace() to
stack_util.cpp to reduce status.cc's dependence.
I add USE_RTTI=1 to build rocksdb to avoid linking librocksdb.a
Issue: #292
* Update
