build: add facilities for interpreting boolean values

This is another small addition to the build system utlities to make it
easier to determine the truthiness of an arbitrary value.

This change ad

build: add facilities for interpreting boolean values

This is another small addition to the build system utlities to make it
easier to determine the truthiness of an arbitrary value.

This change adds the `bool` function, which takes a value and determines
whether the value is "truthy". We consider a value to be truthy if it is
NOT one of: "0", "n", "no", "f" or "false" (all case-insensitive).

If the value is truthy then it is returned as-is. Otherwise, no value
is returned.

Change-Id: I19347f4c3ae00a6b448514a28cc2d9d06f683f25
Signed-off-by: Chris Kay <chris.kay@arm.com>

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build: add string casing facilities to utilities

This is a small modification to two existing functions in the build
system: `uppercase` and `lowercase`.

These functions have been moved to the comm

build: add string casing facilities to utilities

This is a small modification to two existing functions in the build
system: `uppercase` and `lowercase`.

These functions have been moved to the common utilities makefile, and
use the `tr` tool to simplify their implementation. Behaviour is, for
virtually all use-cases, identical.

Change-Id: I0e459d92e454087e4188b2fa5968244e5db89906
Signed-off-by: Chris Kay <chris.kay@arm.com>

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Merge "fix(build): wrap toolchain paths in double quotes" into integration

fix(build): wrap toolchain paths in double quotes

Fix issue with Windows paths containing spaces. Recent toolchain
refactoring (cc277de) caused a regression in the Windows build. Ensure
toolchain pa

fix(build): wrap toolchain paths in double quotes

Fix issue with Windows paths containing spaces. Recent toolchain
refactoring (cc277de) caused a regression in the Windows build. Ensure
toolchain path utilities wrap paths in double quoted strings.

Change-Id: I7a136e459d85cff1e9851aedf0a5272a841df09c
Signed-off-by: Harrison Mutai <harrison.mutai@arm.com>
Signed-off-by: Chris Kay <chris.kay@arm.com>
Co-authored-by: Chris Kay <chris.kay@arm.com>

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