Restore Mainnet 'EXM' Prefix #3424

Job	Run time
lint	57s
lint	57s
Native-x64-Linux	1h 45m 33s
Native-x64-Linux	1h 45m 33s
Native-x64-Linux-latest	1h 42m 32s
Native-x64-Linux-latest	1h 42m 32s
CMake-Linux	19m 32s
CMake-Linux	19m 32s
Native-x64-macOS	2h 8m 37s
Native-x64-macOS	2h 9m 9s
CMake-Linux-latest	18m 14s
CMake-Linux-latest	18m 14s
Depends-ARM 32-bit	3m 51s
Depends-ARM 32-bit	3m 51s
CMake-macOS	41m 7s
CMake-macOS	41m 7s
Native-x64-macOS-latest	1h 52m 40s
Native-x64-macOS-latest	1h 48m 49s
Depends-AARCH64	3m 34s
Depends-AARCH64	3m 34s
CMake-macOS-latest	29m 8s
CMake-macOS-latest	29m 8s
Depends-Win64	4m 19s
Depends-Win64	4m 19s
Depends-32-bit + dash	3m 32s
Depends-32-bit + dash	3m 32s
Depends-x86_64 Linux	3m 37s
Depends-x86_64 Linux	3m 37s
Depends-macOS 10.12	4m 23s
Depends-macOS 10.12	4m 23s
ARM 32-bit [GOAL:install] [no unit or functional tests]	20m 18s
ARM 32-bit [GOAL:install] [no unit or functional tests]	20m 18s
AARCH64 [GOAL:install] [no unit or functional tests]	20m 41s
AARCH64 [GOAL:install] [no unit or functional tests]	20m 41s
Win64 [GOAL:deploy] [no unit or functional tests]	24m 9s
Win64 [GOAL:deploy] [no unit or functional tests]	24m 9s
x86_64 Linux [GOAL:install]	1h 46m 58s
x86_64 Linux [GOAL:install]	1h 46m 58s
x86_64 Linux [GOAL:install] [no GUI, no unit tests, only functional tests on legacy pre-HD wallets]	1h 5m 41s
x86_64 Linux [GOAL:install] [no GUI, no unit tests, only functional tests on legacy pre-HD wallets]	1h 5m 41s
macOS 10.12 [GOAL:deploy] [no unit or functional tests]	17m 48s
macOS 10.12 [GOAL:deploy] [no unit or functional tests]	17m 48s
	1d 3h 51m 3s

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