Write out new *LLVMBuild.txt* files based on the loaded components. This is
useful for auto-upgrading the schema of the files. **llvm-build** will try to a
limited extent to preserve the comments which were written in the original
- source file, although at this time it only preserves block comments that preceed
+ source file, although at this time it only preserves block comments that precede
the section names in the *LLVMBuild* files.