Get rid of the macro hell.

Merge remote-tracking branches 'neheb/patch-2', 'neheb/con', 'neheb/cons', 'neheb/guruhg', 'neheb/r12R3', 'neheb/fefgheh' and 'neheb/rhgerg3453'

Found with bugprone-move-forwarding-reference
Signed-off-by: Rosen Penev <rosenp@gmail.com>

The rhs evaluates to void *const, not const void*.

Found with misc-misplaced-const
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Found with readability-uppercase-literal-suffix
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Found with readability-redundant-control-flow
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Found with readability-avoid-const-params-in-decls
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Found with readability-const-return-type
Signed-off-by: Rosen Penev <rosenp@gmail.com>

pip is bugged on arm64 and s390x. Add --no-cache-dir to fix. For
consistency, it doesn't hurt to add everywhere.

This doesn't work because IterableSplitString() returns its elements
by value.

Fixes clang warning:

 loop variable 'i' is always a copy because the range of type 'IterableSplitString' (aka 'BasicIterableSplitString<char>') does not return a reference [-Werror,-Wrange-loop-analysis]

Found with bugprone-suspicious-missing-comma
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Found with readability-string-compare
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Found with performance-unnecessary-value-param
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Merge remote-tracking branches 'neheb/uniq', 'neheb/bool', 'neheb/loop', 'neheb/bool2', 'neheb/perf', 'neheb/void' and 'neheb/value'

Found with modernize-pass-by-value
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Found with modernize-redundant-void-arg
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Found with performance-for-range-copy
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Found with readability-simplify-boolean-expr
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Found with modernize-loop-convert
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Found with modernize-use-bool-literals
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Found with modernize-avoid-bind
Signed-off-by: Rosen Penev <rosenp@gmail.com>

Found with modernize-make-unique
Signed-off-by: Rosen Penev <rosenp@gmail.com>