pgo: full-inner: add --override tweak.grapheme-shaping=no

Grapheme shaping is now enabled by default in foot. However, when
generating the profiling data in PGO builds, this results in skewed
optimizations.

The end result is worse benchmark results regardless of whether
grapheme-shaping is enabled or not (when running the benchmarks).

CHANGELOG.md

@@ -47,6 +47,8 @@
   itself, and fcft has been compiled with support for it.
 * Default value of `[tweak].grapheme-width-method` changed from
   `double-width` to `wcswidth`.
+* INSTALL.md: `--override tweak.grapheme-shaping=no` added to PGO
+  command line.
 
 
 ### Deprecated

INSTALL.md

@@ -398,7 +398,11 @@ We will use the script `scripts/generate-alt-random-writes.py`:
 ```sh
 ./footclient --version
 foot_tmp_file=$(mktemp)
-./foot --config=/dev/null --term=xterm sh -c "<path-to-generate-alt-random-writes.py> --scroll --scroll-region --colors-regular --colors-bright --colors-256 --colors-rgb --attr-bold --attr-italic --attr-underline --sixel ${foot_tmp_file} && cat ${foot_tmp_file}"
+./foot \
+    --config=/dev/null \
+    --override tweak.grapheme-shaping=no \
+    --term=xterm \
+    sh -c "<path-to-generate-alt-random-writes.py> --scroll --scroll-region --colors-regular --colors-bright --colors-256 --colors-rgb --attr-bold --attr-italic --attr-underline --sixel ${foot_tmp_file} && cat ${foot_tmp_file}"
 rm ${foot_tmp_file}
 ```
 

pgo/full-inner.sh

@@ -18,6 +18,7 @@ cd "${blddir}"
 "${blddir}"/footclient --version
 "${blddir}"/foot \
            --config=/dev/null \
+           --override tweak.grapheme-shaping=no \
            --term=xterm \
         sh -c "
           set -eux