~ Rewrote mkdirs to be in C++ style.
~ Replaced adb_dir{start,stop} with std::string params and (r)find.
+ Added test for mkdirs.
Also make base/test_utils.h public and support temporary directories
as well as files.
Change-Id: I6fcbdc5e0099f3359d3aac6b00c436f250ca1329
The specific motivating case is "text;ls;1.apk", but rather than continue
adding individual characters to the list of characters to be escaped, let's
just switch to quote all arguments with ', which only leaves ' itself to be
escaped.
Bug: 20323053
Bug: 19734868
Change-Id: I8bd71db9373bc2d1169fc11e46c889da6638550a