Version 0.4.9 build 1187

[mtl1979]

• Initial support for building with PowerPC64.
• Fix build with Linux/AArch64.
• [SimpleWallet] Remove save timeout when exiting
• [SimpleWallet] When removing subwallet with lower index than current, we need to adjust the index of current subwallet.
• [SimpleWallet] Allow passing subwallet index to "address" command.

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This discussion was created from the release Version 0.4.9 build 1187.