build: remove unnecessary g-dwarf4 flags

exo/daybreak: advertise (and check against) supported hos version

build: use DWARFv4 explicitly for IDA compatibility with debug elfs

Added Daybreak, a system updater homebrew (#1073) ...

* Implemented a system updater homebrew (titled Daybreak)

* git subrepo pull ./troposphere/daybreak/nanovg

subrepo:
  subdir:   "troposphere/daybreak/nanovg"
  merged:   "c197ba2f"
upstream:
  origin:   "https://github.com/Adubbz/nanovg-deko.git"
  branch:   "master"
  commit:   "c197ba2f"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???" (+1 squashed commits)

Squashed commits:

[232dc943] git subrepo clone https://github.com/Adubbz/nanovg-deko.git troposphere/daybreak/nanovg

subrepo:
  subdir:   "troposphere/daybreak/nanovg"
  merged:   "52bb784b"
upstream:
  origin:   "https://github.com/Adubbz/nanovg-deko.git"
  branch:   "master"
  commit:   "52bb784b"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

* daybreak: switch to using hiddbg for home blocking (+1 squashed commits)

Squashed commits:

[4bfc7b0d] daybreak: block the home button during installation