pop_runica fails to find installed plugin AMICA due to faulty existence test

[zenBen]

Description

In EEGLAB dev, pop_runica tests for existence of files named as per the list of algorithm names (lines 157 - 161).

for index = length(allalgs):-1:1
    if ~exist(allalgs(index).name, 'file')
        allalgs(index) = [];
    end
end

• Algorithm names are given in the allalgs structure (lines 111 - 154), this contains about 29 algorithm names, including amica.

• AMICA 1.7 installed via plugin manager does not contain any file named amica.

• Thus, the pop_runica code above produces a list of available algorithms that doesn't match reality.

#### Steps to Reproduce

1. Install EEGLAB dev
2. Install AMICA 1.7 plugin
3. try to run ICA on a dataset using method AMICA

#### Expected behavior: AMICA is performed on EEG data
#### Actual behavior: `pop_runica` fails
#### Versions

OS version	[fill in]
Matlab version	[fill in]
EEGLAB version	[fill in]