Read the BOM sequentially and store the read bytes for later use if
these do not correspond to a BOM. This allows FIFO to be used as input,
e.g., for piping input or Bash process substitution.
When cross-compiling for Android, the library path suffixes `/<number>/`
refer to API level specific platform libraries instead of architecture
bitness. Disable path suffix use under NDK to avoid incorrect inclusion
of API level specific libraries below the targeted API level.
Fixes: #23830
In commit 00c4f488f2 (FindJNI: support Android NDK, 2022-03-18,
v3.24.0-rc1~325^2) we used `CMAKE_ANDROID_API` to check the Android API
level. However, `CMAKE_SYSTEM_VERSION` is the authoritative value.
When cross-compiling for Android, an unset `CMAKE_ANDROID_API` can
result in failure to locate JNI because the `NativeHelper` component
cannot be found. In this case, the component is falsely assumed to be
available by default (and thus required) since the comparison against an
unset `CMAKE_ANDROID_API` variable evaluates to true. Use
`CMAKE_SYSTEM_VERSION` to determine the Android API level instead.
Issue: #23830
Sergiu Deitsch