Exported symbols conflict with boring-sys crate

[Diggsey]

Problem:

The libaws_lc_sys crate exports symbols which conflict with other crates, such as libboring_sys.

Relevant details

AWS-LC for Rust versions or commit: (6b1bce0...)

System information: for linux, below info can be collected by running uname -srvmp

• CPU architecture: x86-64
• OS: Windows 10

Build log:

= note: libboring_sys-85d2b9b1e2fceefe.rlib(crypto.obj) : error LNK2005: library_init_constructor already defined in libaws_lc_sys-adbe0a2ef2d693b0.rlib(crypto.obj)
          libboring_sys-85d2b9b1e2fceefe.rlib(thread_win.obj) : error LNK2005: p_thread_callback_boringssl already defined in libaws_lc_sys-adbe0a2ef2d693b0.rlib(thread_win.obj)
             ...
          fatal error LNK1169: one or more multiply defined symbols found